The Personal Allowance Carbon Tracking system (PACT) was developed by WSP’s Environment and Energy teams and now has more than 2,000 members.

WSP has also licensed the program to a number of clients, including National Grid, Aviva Investors and Ecclesiastical Insurance.

Staff sign up on a voluntary basis and receive a carbon ‘target’ for home energy use, travel, and their commute to work. They can track this each quarter, and also receive lots of practical ideas on living a more sustainable lifestyle outside work.

This includes an affinity program, regular mails, a facebook community, and a smartphone app.

At the end of the year staff who have pledged to take practical action and those who beat their carbon target are given a financial reward.

PACT makes staff proud to work for their company, and helps link sustainable living at home to sustainability action at work.